I’ve never owned a crown tail myself, but I think that would be my next choice. :)
Sure! First, turn off your flash, that’s a big thing. It causes glare on the tank. Turn on any lights around your tank/bowl, and if you have a hood turn that light on as well. The more light you can get without using flash, the better.
Most cameras have a ‘macro’ setting. It looks like a little flower. You’ll want to use that as well. One more thing camera-wise is the ISO setting. This is how fast the shutter closes (even on digital cameras). I believe most digital cameras have a regular and a high setting, you’ll want to use the high setting.
Keep in mind that some fish are skittish of the camera. Two of mine would hold very still for me and take great photos, and one of my others would flee the second the camera got near his tank.
My trick is to get the lens as close to the glass as possible. If your camera has an auto-focus like mine, this prevents it from focusing it on the glass or things on the glass and inside the tank, instead. Take lots of pictures, it may take a while before you get a good one.
If your fish is afraid of the camera, you can try leaving it next to the tank while you’re gone so they can see it.. that worked for one of my males.
Good luck, hope this helped a little. (:
I actually have a post on taking pictures up next in the queue! Should be up later tonight. (:
We want to see YOUR bettas, your dream betta, your neighbor’s betta, a betta that looks like a betta you used to own.. send them in! Please, no animal cruelty, and please, try to keep it to betta fish only. (: